Mednaut Thurston

Rick Ravanello

Dr. Grote Maxwell

Joe Morton

Dr. Haylen Breslauer

Maria del Mar

Dr. Caleb `C.J.' Jurado

Brian McNamara

Dr. Dru Breslauer

Alexandra Wilson

ANI

Julia Pennington

Dr. Batung

Jordan Lund

Gay Thomas

Dr. DeMilla

Joe Spano

Charles Bantam

Larry Cedar

Lt. Salisaw

Salli Richardson-Whitfield

Guest Star

Kieran Mulroney

Mednaut Westhusing

Joe Pascual

Guest Star

Zachary Ansley

Guest Star

Larry Holden

Guest Star

Veena Sood

Guest Star

Christine Willes

Guest Star

Haig Sutherland

Guest Star

Brian Jensen

Guest Star

Kirsten Robek

Guest Star

John Cothran Jr.

Guest Star

Lyle Kanouse

Guest Star

Leanne Adachi

Guest Star

Fay Masterson

Guest Star

Hagan Beggs

Guest Star

Colleen Wheeler

Guest Star

Michael O'Neill

Guest Star

Taylor-Anne Reid

Guest Star

Colleen Winton

Guest Star

Devin Drewitz

Guest Star

Harry Groener

Guest Star

Allen Cutler

Guest Star

Brent Chapman

Guest Star

Alex Diakun

Guest Star

Melanie Shatner

Guest Star

Craig Kirkwood

Guest Star

Alexa Mardon

Guest Star

Lisa Darr

Guest Star

Gordon Currie

Guest Star

Alec Willows

Guest Star

Nancy Sivak

Guest Star

Mitchell Kosterman

Guest Star

Tiffany Knight

Guest Star

Fiona Scott

Guest Star

Paul McGillion

Guest Star

Diane Brown

Guest Star

Diana Stevan

Guest Star

Andrew Laurenson

Guest Star

John Callander

Guest Star

Alison Matthews

Guest Star

Brooke Radons

Guest Star

Matt Smith

Guest Star

Cyrus Thiedeke

Guest Star

Paul Jarrett

Guest Star

Mike Kopsa

Guest Star

Michelle Hart

Guest Star

Zoran Vukelic